Modulate offers AI models that work on the raw audio of a conversation. Emotion, tone and intent all register as signals, as do signs that a voice is a deepfake. The models can combine those readings to flag a fraud attempt or a caller losing patience with a voice agent, and some of that analysis runs live while the conversation is still happening. The company got its start moderating voice chat in online games, and harassment and child grooming on social and gaming platforms are still among the things its models look for. Health care institutions use them to screen out callers impersonating staff with deepfake voices. A newer set of customers runs voice AI agents and uses the models to check how those agents are performing.